New Delhi, Jan.28 : Indias Sania Mirza is set to become Asias number one womens tennis star, overtaking Chinas Na Li in the WTA Rankings. Agency reports said the official WTA list would be announced on Tuesday. Sanias third-round appearance in the Australian Open has enabled her to be ranked 29th on the WTA charts, up three spots from her previous ranking. Mirza said she was pleased to hear the news, and described it as a rare honour. ANI